Improvement in pulleys



JOHN J. COWELL.

Improvement in Pulleys.

N0.126,524. Patented May7,1872.

PATENT OFFICE.

JOHN J. COWELL, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN PU LLEVS.

Specification forming part of Letters Patent No. 126,524, dated May 7,1872.

To all whom it may concern:

Be it known that I, JOHN J. COWELL, of Newark, in the county of Essexand in the State of New Jersey, have invented certain'new and usefulImprovements in Pulleys; and do hereby declare that Vthe following is afull, clear, and exact description thereof, reference being had to theaccompanying drawing and to the letters of reference marked thereonmaking a part of this speciiication.

The nature of my invention consists in a rope or cord pulley made in twopieces, struck up from sheet metal, and joined together, as will behereinafter more fully set forth. It also consists in the constructionof a cast frame to be used with said sheet-metal pulley.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure l is a side view of the entire frame and pulley. Fig. 2 is afront view of the same.4

Fig. 3 is a side view of the pulley. Fig. 4 is a longitudinal section ofthe same; and Fig. 5 is an interior view of a part of the frame.

The pulley is made in two pieces, A and B, struck up of sheet metal insuitable form, so

A that when placed side by side they shall form the usual groove aaround the circumference of the pulley. Each part of the pulley hastongues b b cut out, or rather struck out, with the dies forming thepieces, said tongues passing through holes or slots d d formed in thesame manner in the other part, and then bent or clinched so as tofasten, the two parts rmly together. The two parts A B may be fastenedby rivets, bolts, &c., according to the Y amount of strain the pulley isintended to be subjected to. The frame is also made in two pieces, C andD, cast from patterns-one provided with lugs, the other with notches atthe ends for binding the two parts together. Ou the outer sides of theframe are wedge-shaped projections e e to fasten in the ood, and in theends of the frame are slanting holes for the passage of nails ff in aninclined position to firmly fasten in the wood. In the sides of theframe are holes for the passage of the spindle, upon which the pulleyrevolves. Through the pulley passes a thimble, h, which is also struckout from sheet metal, and after insertion it is fastened in place at thesame time and with the same motion which fastens the two sides of thepulley. A cast axle may be used in place of the thimble, or the sectionsof the pulley may be struck out so as to form the thimble.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. As an article of manufacture, the withindescribed pulley, composed oftwo pieces of sheet metal, A B, struck up to the required form, andhaving projecting tongues b b and holes d d for clinching the partstogether, and a central thimble, h, all constructed substantially as setforth.

2. The combination of the struck-up sheetmetal sections A B, connectedtogether, as described, with the cast-iron pulley-box C D, also made intwo parts, all as shown and described.

In. testimony' that I claim the foregoing I have hereunto set my handthis 2d day of December, 1871.

JNO. J. COWELL.

Witnesses:

JNO. O. GooDRIoH, Ronr. N. WAITE.

